[Qemu-devel] [PATCH 1/2] target-arm: sort TCG cpreg list by 64bit id version

[Alvise Rigo <a.rigo@virtualopensystems.com>]

Both KVM and TCG populate the cpreg_list with 64 bit registers IDs, but in the TCG side the cpreg_list is sorted using the 32 bit id version while in the kvm side the 64 bit id version is used.
This patch makes the sorting of the cpreg_list consistent between KVM and TCG.

Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
---
 target-arm/helper.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 2a98be7..834041e 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -225,10 +225,14 @@ static void count_cpreg(gpointer key, gpointer opaque)
 
 static gint cpreg_key_compare(gconstpointer a, gconstpointer b)
 {
-    uint32_t aidx = *(uint32_t *)a;
-    uint32_t bidx = *(uint32_t *)b;
-
-    return aidx - bidx;
+    uint64_t aidx = cpreg_to_kvm_id(*(uint32_t *)a);
+    uint64_t bidx = cpreg_to_kvm_id(*(uint32_t *)b);
+    
+    if (aidx > bidx)
+	return 1;
+    if (aidx < bidx)
+	return -1;
+    return 0;
 }
 
 static void cpreg_make_keylist(gpointer key, gpointer value, gpointer udata)
-- 
1.8.1.2